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CVE-2021-37616— Null pointer dereference in Exiv2::Internal::resolveLens0x8ff

CVSS 5.5 · Medium EPSS 0.07% · P22
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I. Basic Information for CVE-2021-37616

Vulnerability Information
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Vulnerability Title
Null pointer dereference in Exiv2::Internal::resolveLens0x8ff
Source: NVD (National Vulnerability Database)
Vulnerability Description
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A null pointer dereference was found in Exiv2 versions v0.27.4 and earlier. The null pointer dereference is triggered when Exiv2 is used to print the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when printing the interpreted (translated) data, which is a less frequently used Exiv2 operation that requires an extra command line option (`-p t` or `-P t`). The bug is fixed in version v0.27.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Exiv2 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Exiv2是Andreas Huggel个人开发者的一套用于管理图像元数据的C++库和命令行应用程序。该产品提供了读取和写入EXIF、IPTC和XMP等多种格式图像元数据的功能。 Exiv2 中存在代码问题漏洞，该漏洞源于产品在打印图片文件时未能检查指针有效性，攻击者可通过特殊的图像文件引发空指针引用进而导致拒绝服务。以下产品及版本受到影响：Exiv2 v0.27.4 版本及之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Exiv2exiv2 <= 0.27.4 -

II. Public POCs for CVE-2021-37616

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III. Intelligence Information for CVE-2021-37616

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Same Patch Batch · Exiv2 · 2021-08-09 · 11 CVEs total

CVE-2021-328155.5 MEDIUMDenial of service due to assertion failure in crwimage_int.cpp
CVE-2021-343345.5 MEDIUMDenial of service due to integer overflow in loop counter
CVE-2021-376215.5 MEDIUMDenial of service due to infinite loop in Image::printIFDStructure
CVE-2021-376225.5 MEDIUMDenial of service due to infinite loop in JpegBase::printStructure (#1)
CVE-2021-376235.5 MEDIUMDenial of service due to infinite loop in JpegBase::printStructure (#2)
CVE-2021-343354.7 MEDIUMDenial of service due to FPE in Exiv2::Internal::resolveLens0xffff
CVE-2021-376154.7 MEDIUMNull pointer dereference in Exiv2::Internal::resolveLens0x319
CVE-2021-376184.7 MEDIUMOut-of-bounds read in Exiv2::Jp2Image::printStructure
CVE-2021-376194.7 MEDIUMOut-of-bounds read in Exiv2::Jp2Image::encodeJp2Header
CVE-2021-376204.7 MEDIUMOut-of-bounds read in XmpTextValue::read()

IV. Related Vulnerabilities

Same product: exiv2
Same vendor: Exiv2
Same weakness: CWE-476

V. Comments for CVE-2021-37616

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